Pipe-union.



No. 692,8al. y

mr. LINDSAY.

PIPE -UNIN.

(Application mea Feb. 25, 1901.)

-Patnted Feb. Il; |902.-

(No Mdem UNITED STATES .PATET CEEIOE.

f ROBERT F. LINDSAY, OE GREENVILLE, SOUTH OAROLINA,ASSIGNOR 'ro SAMUEL O. K OONOE, or OLARKSVILLE, PENNSYLVANIA, AND JOI-IN Vs.

LESLIE, OE SI-IARON, PENNSYLVANIA.

PIPEUNION.

SIEECIFICATIONl forming part of Letters Patent No. 692,881, dated February 11, 12.3102.

l Application nlel Iebruaryr, 1901., Serial No. 48,785. (No model.)

To a/ZZ raz/m, it IItmZyQIoGQIjZL:

Be it known that I, ROBERT F. LINDSAY, a citizen of the United States, residing at Greenville, in 'the county of Greenville and State of South Carolina,have invented certain new and useful Improvements in Pipe-Unions; and I do declare the following to beafull, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, and to the gures of reference marked thereon, which form a part of this specification.

This invention relates to that type o'ffdetachable pipe couplings or,V unions hitherto proposed for Water-pipes which embrace a sleeve into which theconfronting ends of the pipes are inserted, a cone encircling eachpipe end, and nuts having threaded engagementY with the sleeve and bearing upon said cones i to thereby hold the pipes in position.

Hitherto the construction and arrangement of the parts named have been such that the It has been demonstrated that such constructions are Wholly unreliable in action, for the reason that the tendency of the pipes to pull apart under the iniiuence of vibrationgdue to the flowing of Water under pressure therethrough and by contraction of the pipes in cold Weather and settling of Athe building is not successfully resisted when the confronting parts of the pipes are gripped.

The principal object of the present invention is to overcome this disadvantage by simple, inexpensive, and thoroughly practical means, and this object is accomplished by reorganizing and reconstructing the parts so that the coupling will grip the respective ends of the pipe at a distance from each other and at a distance from the'Y extremities of the pipe Without necessitating an undue increase in the length of the sleeve or requiring a threaded engagement of thesleeve and pipe, which engagement reduces but does not obviate the tendency to disconnection of the parts. Other objects and advantages will appear from the following description.

In the accompanying drawings, illustrating the invention, and whereinsimilar'numerals l A of reference designate similar parts in the several views, Figure l is a side elevation of a pipe-union. constructed in accordance with my invention. Fig.y 2 is a longitudinal sectional view thereof. Fig. 3 is a side view of a split gland forming a part of the union. Fig. 4 is an end View of said gland.

The two confronting ends of the pipes which are to be detachably united together are designated by the numerals l and 2, and 3 designates the sleeve into which said confronting ends are slipped. It will-be observed that the bore of the sleeveis of a diameter approximately the same as the externaldiameter of Ythe pipe ends, Wherebysaid sleeve itssnugly upon said pipe-endsthroughout itsentire length. Y -Each end of said sleeve isthreaded externally for engagement with the internally-threaded widened end of a gland 5,'

which has an Outward extension 6, that also fits snugly upon the pipe, (having a bore of Substantially the diameter of the latter,) and said outward extension 6 is split longitudinally at suitable places, as shown at 7, to give it resilience and is formed with external 'threads 8-and with-a conical extremity 9,

.tension thus constitutes a compressible device adapted to be gripped tightly upon the pipe end to thereby hold the parts in place. An internally-th'readednut l0, forming part of a compressible gri'pmeans, of which said extension forms the other part, engages said threads` 8 and compresses said extension 6 tightly upon the pipe therein. Said nut has a beveled inner end wall llto engage the conical end 9 of the extension 6. The widened end of the gland 5 is of such length as to provide a space within the gland and at the end of the sleeve 3 for a packing-ring 12.

By the construction described the grip of the union upon the respective pipes will be at a distance from the extremities of" said pipes and, as proved by practiceLwill resist the tendency to separation of the pipe ends by the causes above mentioned. Moreover, as the sleeve lits snugly upon the pipe ends a perfect alinement of said ends is at all times assured, and in addition thereto .it will be 8o A y lll IOO

of a diameter approximately the same as that of the pipe ends which it is designed to embrace and having its end threaded externally, a gland having internal threads to engage the threaded end of said sleeve, said gland having an externally-threaded and longitudinally-slitted extension formed with a bore of a diameter approximately the same as that of said pipe ends, and a nut threaded upon said extension.

Millat 2. A detachable coupling or union for Water-pipes, comprising a sleeve having a bore of a diameterapproximately the same asthat of the pipe ends which it is designed to embrace, and having its ends threaded externally, glands having internal threads to engage the threadedends of said sleeve, said glands being formed to provide coniined spaces outside the ends of the sleeve, packing in said spaces,extensions from said glands having bores of a diameter approximately the same as that of said pipe ends, said extensions being slitted longitudinally and having conical free ends, and nuts threaded upon said extensions and having beveled Walls to engage said conical ends.

In testimony whereof I aflix my signature in presence of two Witnesses.

ROBERT F. LINDSAY.

Witnesses:

J. L. Mnnnrr'r, XV. O. ESTES. 

